20221100201 has 4 divisors (see below), whose sum is σ = 20221806804. Its totient is φ = 20220393600.

The previous prime is 20221100191. The next prime is 20221100203. The reversal of 20221100201 is 10200112202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5963546176 + 14257554025 = 77224^2 + 119405^2 .

It is a cyclic number.

It is not a de Polignac number, because 20221100201 - 2²⁶ = 20153991337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221100203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308480 + ... + 368241.

It is an arithmetic number, because the mean of its divisors is an integer number (5055451701).

Almost surely, 2^20221100201 is an apocalyptic number.

It is an amenable number.

20221100201 is a deficient number, since it is larger than the sum of its proper divisors (706603).

20221100201 is an equidigital number, since it uses as much as digits as its factorization.

20221100201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706602.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20221100201 its reverse (10200112202), we get a palindrome (30421212403).

The spelling of 20221100201 in words is "twenty billion, two hundred twenty-one million, one hundred thousand, two hundred one".